Use of hydrous titanium dioxide as potential sorbent for the removal of manganese from water

Authors

  • Ramakrishnan Kamaraj CSIR-Central Electrochemical Research Institute, Karaikudi - 630 006
  • Pandian Ganesan CSIR-Central Electrochemical Research Institute, Karaikudi - 630 006
  • Subramanyan Vasudevan CSIR-Central Electrochemical Research Institute, Karaikudi - 630 006

DOI:

https://doi.org/10.5599/jese.2014.0067

Keywords:

Titanium dioxide, manganese, adsorption, thermodynamics, isotherm, kinetics.

Abstract

This research article deals with an electrosynthesis of hydrous titanium dioxide by anodic dissolution of titanium sacrificial anodes and their application for the adsorption of manganese from aqueous solution. Titanium sheet was used as the sacrificial anode and galvanized iron sheet was used as the cathode. The optimization of different experimental parameters like initial ion concentration, current density, pH, temperature, etc., on the removal efficiency of manganese was carried out. The maximum removal efficiency of 97.55 % was achieved at a current density of 0.08 A dm-2 and pH of 7.0. The Langmuir, Freundlich and Redlich Peterson isotherm models were applied to describe the equilibrium isotherms and the isotherm constants were determined. The adsorption of manganese preferably followed the Langmuir adsorption isotherm. The adsorption kinetics was modelled by first- and second- order rate models and the adsorption kinetic studies showed that the adsorption of manganese was best described using the second-order kinetic model. Thermodynamic parameters indicate that the adsorption of manganese on hydrous titanium dioxide was feasible, spontaneous and exothermic.

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Published

05-12-2014

How to Cite

Kamaraj, R., Ganesan, P., & Vasudevan, S. (2014). Use of hydrous titanium dioxide as potential sorbent for the removal of manganese from water. Journal of Electrochemical Science and Engineering, 4(4), 187–201. https://doi.org/10.5599/jese.2014.0067

Issue

Section

Electrochemical Engineering